Is there any feasible options/methods for resurfacing a concrete sidewalk during cold weather specifically between maybe 33 degrees and 40 degrees, using Sakrete type stuff or whatever. Would like to be able to accomplish it without having to wait until spring or summer. Or is it pretty much out of the question when temperatures aren't warm enough?

Hi gang. I am trying to bring back to life a sad old concrete slab patio. it has some hairline cracks that I was going to fill with Sika Crack Flex sealant (or similar polyurethane based product). let cure and then paint the whole deal with a quality concrete paint. Sika says their product is paintable with "oil, water or rubber based paint." not even sure what that last one is....never seen that. and they say "silicone based" or high solvent based paints are to be avoided. so my question is, I want to paint this puppy and ideally have it not be obvious where the repairs are, but I want the cracks to still be able to flex. so is there one type of paint that would adhere best and not just be cracking off in a few months? also, while I am at it....there are a couple low spots on the patio (like 2x4 areas) that I was going to try to "fill." is there a DIY friendly leveler-type product that is not too hard to apply? would I need to sand off the existing finish on those areas first before I try the leveling (used a SureCrete Pigmented Solvent-Based Acrylic sealer a few years back)...so i probably have to sand the whole area anyway). any advice is appreciated. thanks